1. The Eye

2. Light is electromagnetic energy
Light that is not visible to humans:
Ultraviolet and infrared
Light visible is the electromagnetic spectrum called:
ROYGBIV

3. How light travels through the eye
Light enters through the opening in the eye called the PUPIL
Pupil adjusts according to how much light enters the eye
In dark pupils get
Big
In light pupil gets
Small
Pupils also react to emotions
Open to fear

4. Next, pupil light encounters the LENS which adjust to the distance of objects by changing its thickness
Images are then projected onto the RETINA – the sensitive surface of the eye that acts like film in a camera

5. PHOTORECEPTORS- neurons that are sensitive to light
Once light hits photoreceptors, nerve carries the visual input to brain to visual area of the occipital lobe
Two kinds of photoreceptors:
Rods- black and white
Cones – color
Blind Spot – point in the eye where the eye registers nothing

6. Visual Acuity – sharpness of vision
Colors across from one another on the color circle are called complementary colors
Afterimage- the complementary color

8. Light is electromagnetic energy?
True
False

9. Infrared and ultravioliet light is light we can see?
True
False

10. What allows us to see in color?
Rods
Cones
Retina
blindspot

11. In dark your pupils?
Get small
Nothing happens
Get big

12. This part of the eye acts like film in a camera?
Lens
Cornea
Pupil
Retina

13.
Pg . 81

14. Define the following: Label the following:
Lens blind spot
Pupil lens
Retina cornea
Blind spot pupil
Photoreceptors iris
Rods retina
Cones optic nerve
Questions:
1.The sharpness of vision is called?
2.The colors across from one another are called?
3.Light is….
4.What are the main colors of the spectrum?

15. http://www. youtube. com/watch
Are For Sight Song - YouTube